CA2007544C - Method and device for coating webs of material, especially webs of paper or cardboard - Google Patents
Method and device for coating webs of material, especially webs of paper or cardboard Download PDFInfo
- Publication number
- CA2007544C CA2007544C CA002007544A CA2007544A CA2007544C CA 2007544 C CA2007544 C CA 2007544C CA 002007544 A CA002007544 A CA 002007544A CA 2007544 A CA2007544 A CA 2007544A CA 2007544 C CA2007544 C CA 2007544C
- Authority
- CA
- Canada
- Prior art keywords
- coating
- doctor
- web
- dosing member
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
- B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
- B05C11/042—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades allowing local positioning, loading or deforming along the blades
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
- D21H23/34—Knife or blade type coaters
- D21H23/38—Knife or blade type coaters the fluid material being applied with a special device, e.g. with a roll in a flooded-nip inverted blade coater
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Road Repair (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Control Of Direct Current Motors (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method and device for coating a web (2) of material, especially a web of paper or cardboard, traveling over a backing roll (1) whereby coating is applied to the web in excess and reduced by a flow-control component (3), especially a doctor, to the desired thickness and whereby the flow-control component is secured to a beam (5) that extends over the operating width, characterized in that the coating-thickness deviation from a straight line is determined over the operating width and employed as a parameter for controlling the heat emitted by a heater (13), especially heating strips, positioned on the side of the doctor beam facing away from the backing roller.
Description
The invention concerns, first, a method and apparatus for continuously coating a web of material, especially a web of paper or cardboard., travelling over a backing roll.
In a known method of coating webs of material, an applicator (roller or nozzle) applies excess coating to the web and a flow-control system reduces the coating to the desired thickness. The flow-control system is a doctor with its base secured in a pivoting beam. The coating thickness varies in accordance with how hard the knife rests against the backing roll, which is dictated in turn by the tension on the doctor.
When webs of paper or cardboard are coated, their transverse contours exhibit production-dictated fluctuations that necessitate locally varying the pressure of the doctor over the operating width in order to obtain a uniform coating.
This can be done as described in the aforementioned German patent by varying the adjustment of the strip that the doctor is mounted on along the line of support in accordance with whether the coating is i~oo thick or too thin at each point by means of tension and compression screws. This approach makes it possible to compensai~e for even geometric errors in tensioning or supporting the doctor that lead to changes in its shape and hence in i~he thickness of the coating.
The known methods and de=_vices, however, cannot compensate for variable errors in the distribution of the coating thickness that mainly derive from changes in temperature in the vicinity of the flow-control system. Unilateral heating will especially distort a doctor beam made out of a poorly heat-conducting high-grade steel, leading to irregular coating. A
beam can be heated. at only one end for example by warm coating and/or warm paper or even by temperature differences in the environment, due to a nearby dryer for example.
One object of the invention is to provide a generic method that can be employed to simply establish a uniform distribution of coating over the operating width.
The invention provides a method of coating a web of material, particularly a web of paper or cardboard, guided around a backing roll, wherein an excess of coating material is applied to the web of material over a working width, and then dosed to the desired coating weight by means of a dosing member, particularly a doctor knife, lying against the web of material, the dosing member being fastened to a doctor beam extending over the working width and bending of the doctor beam being counteracted with the aid of a heating device fastened to the doctor beam, characterised in that deviation from a rectilinear. pattern of the coating weight is determined transversely over the working width and, with the deviation as controlled variable, the heating power of a heating band, which is fastened continuously over the working width on a side, facing away from i~he backing roll, of the doctor beam, is regulated.
The invention also provides an apparatus for coating a web of material, guided around a backing roll, which apparatus is provided with a dosing member, having a foot that is fastened in a swivellable doctor beam, and with a heating device fastened on the doctor beam and serving to counteract bending of the doctor beam, characterised in that at least one heating band extending over the entire working width is fastened on a side, facing away from t:he backing roll, of the doctor beam.
The method in accordance with the invention provides a practical way of contro7_ling the effect of the variable parameters on the distribution of coating without having to detect or measure the parameters themselves. It becomes possible to establish a rectilinearly controlled coating distribution over the total operating width.
The advantage of the thermostatically controlled heating bands or strips is that they are easy to install and cost-effective and occupy little space as well as being highly responsive.
They also ensure a uniform temperature distribution over the operating width of: the doctor beam without expensive controls.
The invention will. now be described with reference to the drawings, wherein Figure 7. is a schematic perspective view of a coater in accox-dance with the invention, Figure 2 is a perspective view of a detail of Figure 1, and 200'7544 Figures 3 a-c are graphs of the coating thickness, wherein Figure 3 a illustrates an uncorrected distribution, Figure 3 b a rectilinearly compensated distribu-tion, and Figure 3 c a distribution that has in addition had its slope decreased to a minimum.
The coater in accordance with the invention illustrated in the drawings is employed to coat a web 2 of material, paper in particular, 'that travels around a backing roll 1 in the direction indicated by the arrow. The coating is applied to the web in exceas by an unillustrated applicator and reduced to the desired 'thickness by the flow-control system that will now be described.
The actual flow-control mechanism is a doctor 3 with its edge resting against web 2 and its base in a tensioning beam 4.
The position of tensioning beam 4 in a doctor beam 5 can be adjusted with a spindled motor 6. Tensioning beam 4 travels at an angle of .approximately 70° to 80° in relation to doctor 3. A supporting strip 7 is secured to the side of doctor beam 5 that faces away from backing roll 1 above where doctor 3 is tensioned :in. The transverse contour of supporting strip 7 can be established by way of setscrews 8 regularly distributed along the operating width.
Doctor beam 5 is suspended in a lateral frame 9 and rotates subject to a spindle-driven lifting mechanism 11 around the line (flow-control line 10) where the edge of the doctor contacts backing roll 1 with the object of establishing a particular beam angle (the angle between the tangent to backing roll 1 and the undeformed doctor). Frame 9 can be pivoted along with doctor beam 5 away from backing roll 1 around an axis :12 for cleaning or for replacing the doctor.
Two lateral independently adjustable stops 13 precisely demarcate how fear doctor beam 5 can pivot in against backing roll 1. The position of stops 13 themselves is established by spindle-driven lifting mechanisms 14 activated by controls 15.
Doctor beam 5 is rectangular in cross-section, and heating strips 16.1 to 16.5 are secured along the total operating width to its rear wall 5.1 and lower wall 5.2. The strips are supplied with current from an unillustrated source. The output of heating strips 16 is varied by controls 15 in accordance with the transverse contour of the coating. A
particular advantage is that the heating strips in the vicinity of the edge of doctor beam 5 that faces doctor 3 are ~oo~s~~
thermostaticall~~ controlled locally in accordance with the local temperature. These strips can accordingly establish the same temper<~ture at each side 5.1 and 5.2 of doctor beam without additional controls. Thermostatically controlled strips are known and are distributed by Raychem for example under the name ~~uto-Trace. They are described in that firm's catalog of the Name name.
The heating strips 16 in the simplest embodiment of the invention are connected to a uniform source of current in order to ensure a uniform temperature over sides 5.1 and 5.2 of doctor beam 5. The amount of current supplied to the strips depends on a prescribed difference between the temperatures of doctor 3 and of sides 5.1 and 5.2. This difference is measured by temperature sensors on the side of tensioning beam 4 that faces backing roll 1 and on beam sides 5.1 and 5.2.
The amount of current. supplied to heating strips 16 and hence their output depend i.n an advanced and preferred embodiment on the transverse contour of the coating. The actual local thicknesses of the coating are measured at regular intervals along the operating width and their deviation from a straight line determined at prescribed sections by for example integrating the corresponding local results over the individual sections. The transverse contour of the coating is measured with known instruments, traveling detectors that determine the coating thickness from absorbed radiation for instance.
Experience indicates that the envelopes of the local curves of coating thickness often exhibit what are called tub or bombs shapes, meaning that the curves belly in negatively or out positively ;at the center of the coater (Fig. 3 a). The controls will a~~cordingly govern the output of heating strips 16 to minimize 'the deviation of the envelope from a straight line (Fig. 3 b). This is possible because doctor beam 5 flexes in accordance with the difference in temperature between its side facing backing roll 1 and its sides 5.1 and 5.2 that face away from the roll. Heating sides 5.1 and 5.2 will accordingly flex the ends of the sides relative to the middle of tensioning beam 4 and accordingly vary the pressure of the edge of 'the doctor against web 2 and the doctor's geometry in the corresponding areas, accordingly determining the thickness of the coating. The method of control in accordance with the invention accordingly makes it possible to establish a straight contour over the operating width without involved measurements of the individual causes of deviation.
In still a further development of the invention, motorized adjustment of the distance of the doctor beam 5 from both 2~0'754 sides of the co<~ter is initiated in supplement to controls 15. Independeni~ly controlled lifting mechanisms 14 are accordingly positioned at each side of the coater, making it possible to tili;. doctor beam 5 along the operating width by varying stops 1:3 within a specific range. In this embodiment of the invention, once the envelope is straightened out by heating strips :16, the slope of the straight line is determined by the controls to determine whether the coating becomes thicker along the operating width. Lifting mecha-nisms 14 then adjust stops 13 relative to each other in accordance with the slope of the line until the slope is zero at the desired 'thickness (Fig. 3 c).
Although the flow-control mechanisms described herein are doctors, such other flow-control mechanisms as rollers or strip secured i:n a doctor beam could also be employed.
In a known method of coating webs of material, an applicator (roller or nozzle) applies excess coating to the web and a flow-control system reduces the coating to the desired thickness. The flow-control system is a doctor with its base secured in a pivoting beam. The coating thickness varies in accordance with how hard the knife rests against the backing roll, which is dictated in turn by the tension on the doctor.
When webs of paper or cardboard are coated, their transverse contours exhibit production-dictated fluctuations that necessitate locally varying the pressure of the doctor over the operating width in order to obtain a uniform coating.
This can be done as described in the aforementioned German patent by varying the adjustment of the strip that the doctor is mounted on along the line of support in accordance with whether the coating is i~oo thick or too thin at each point by means of tension and compression screws. This approach makes it possible to compensai~e for even geometric errors in tensioning or supporting the doctor that lead to changes in its shape and hence in i~he thickness of the coating.
The known methods and de=_vices, however, cannot compensate for variable errors in the distribution of the coating thickness that mainly derive from changes in temperature in the vicinity of the flow-control system. Unilateral heating will especially distort a doctor beam made out of a poorly heat-conducting high-grade steel, leading to irregular coating. A
beam can be heated. at only one end for example by warm coating and/or warm paper or even by temperature differences in the environment, due to a nearby dryer for example.
One object of the invention is to provide a generic method that can be employed to simply establish a uniform distribution of coating over the operating width.
The invention provides a method of coating a web of material, particularly a web of paper or cardboard, guided around a backing roll, wherein an excess of coating material is applied to the web of material over a working width, and then dosed to the desired coating weight by means of a dosing member, particularly a doctor knife, lying against the web of material, the dosing member being fastened to a doctor beam extending over the working width and bending of the doctor beam being counteracted with the aid of a heating device fastened to the doctor beam, characterised in that deviation from a rectilinear. pattern of the coating weight is determined transversely over the working width and, with the deviation as controlled variable, the heating power of a heating band, which is fastened continuously over the working width on a side, facing away from i~he backing roll, of the doctor beam, is regulated.
The invention also provides an apparatus for coating a web of material, guided around a backing roll, which apparatus is provided with a dosing member, having a foot that is fastened in a swivellable doctor beam, and with a heating device fastened on the doctor beam and serving to counteract bending of the doctor beam, characterised in that at least one heating band extending over the entire working width is fastened on a side, facing away from t:he backing roll, of the doctor beam.
The method in accordance with the invention provides a practical way of contro7_ling the effect of the variable parameters on the distribution of coating without having to detect or measure the parameters themselves. It becomes possible to establish a rectilinearly controlled coating distribution over the total operating width.
The advantage of the thermostatically controlled heating bands or strips is that they are easy to install and cost-effective and occupy little space as well as being highly responsive.
They also ensure a uniform temperature distribution over the operating width of: the doctor beam without expensive controls.
The invention will. now be described with reference to the drawings, wherein Figure 7. is a schematic perspective view of a coater in accox-dance with the invention, Figure 2 is a perspective view of a detail of Figure 1, and 200'7544 Figures 3 a-c are graphs of the coating thickness, wherein Figure 3 a illustrates an uncorrected distribution, Figure 3 b a rectilinearly compensated distribu-tion, and Figure 3 c a distribution that has in addition had its slope decreased to a minimum.
The coater in accordance with the invention illustrated in the drawings is employed to coat a web 2 of material, paper in particular, 'that travels around a backing roll 1 in the direction indicated by the arrow. The coating is applied to the web in exceas by an unillustrated applicator and reduced to the desired 'thickness by the flow-control system that will now be described.
The actual flow-control mechanism is a doctor 3 with its edge resting against web 2 and its base in a tensioning beam 4.
The position of tensioning beam 4 in a doctor beam 5 can be adjusted with a spindled motor 6. Tensioning beam 4 travels at an angle of .approximately 70° to 80° in relation to doctor 3. A supporting strip 7 is secured to the side of doctor beam 5 that faces away from backing roll 1 above where doctor 3 is tensioned :in. The transverse contour of supporting strip 7 can be established by way of setscrews 8 regularly distributed along the operating width.
Doctor beam 5 is suspended in a lateral frame 9 and rotates subject to a spindle-driven lifting mechanism 11 around the line (flow-control line 10) where the edge of the doctor contacts backing roll 1 with the object of establishing a particular beam angle (the angle between the tangent to backing roll 1 and the undeformed doctor). Frame 9 can be pivoted along with doctor beam 5 away from backing roll 1 around an axis :12 for cleaning or for replacing the doctor.
Two lateral independently adjustable stops 13 precisely demarcate how fear doctor beam 5 can pivot in against backing roll 1. The position of stops 13 themselves is established by spindle-driven lifting mechanisms 14 activated by controls 15.
Doctor beam 5 is rectangular in cross-section, and heating strips 16.1 to 16.5 are secured along the total operating width to its rear wall 5.1 and lower wall 5.2. The strips are supplied with current from an unillustrated source. The output of heating strips 16 is varied by controls 15 in accordance with the transverse contour of the coating. A
particular advantage is that the heating strips in the vicinity of the edge of doctor beam 5 that faces doctor 3 are ~oo~s~~
thermostaticall~~ controlled locally in accordance with the local temperature. These strips can accordingly establish the same temper<~ture at each side 5.1 and 5.2 of doctor beam without additional controls. Thermostatically controlled strips are known and are distributed by Raychem for example under the name ~~uto-Trace. They are described in that firm's catalog of the Name name.
The heating strips 16 in the simplest embodiment of the invention are connected to a uniform source of current in order to ensure a uniform temperature over sides 5.1 and 5.2 of doctor beam 5. The amount of current supplied to the strips depends on a prescribed difference between the temperatures of doctor 3 and of sides 5.1 and 5.2. This difference is measured by temperature sensors on the side of tensioning beam 4 that faces backing roll 1 and on beam sides 5.1 and 5.2.
The amount of current. supplied to heating strips 16 and hence their output depend i.n an advanced and preferred embodiment on the transverse contour of the coating. The actual local thicknesses of the coating are measured at regular intervals along the operating width and their deviation from a straight line determined at prescribed sections by for example integrating the corresponding local results over the individual sections. The transverse contour of the coating is measured with known instruments, traveling detectors that determine the coating thickness from absorbed radiation for instance.
Experience indicates that the envelopes of the local curves of coating thickness often exhibit what are called tub or bombs shapes, meaning that the curves belly in negatively or out positively ;at the center of the coater (Fig. 3 a). The controls will a~~cordingly govern the output of heating strips 16 to minimize 'the deviation of the envelope from a straight line (Fig. 3 b). This is possible because doctor beam 5 flexes in accordance with the difference in temperature between its side facing backing roll 1 and its sides 5.1 and 5.2 that face away from the roll. Heating sides 5.1 and 5.2 will accordingly flex the ends of the sides relative to the middle of tensioning beam 4 and accordingly vary the pressure of the edge of 'the doctor against web 2 and the doctor's geometry in the corresponding areas, accordingly determining the thickness of the coating. The method of control in accordance with the invention accordingly makes it possible to establish a straight contour over the operating width without involved measurements of the individual causes of deviation.
In still a further development of the invention, motorized adjustment of the distance of the doctor beam 5 from both 2~0'754 sides of the co<~ter is initiated in supplement to controls 15. Independeni~ly controlled lifting mechanisms 14 are accordingly positioned at each side of the coater, making it possible to tili;. doctor beam 5 along the operating width by varying stops 1:3 within a specific range. In this embodiment of the invention, once the envelope is straightened out by heating strips :16, the slope of the straight line is determined by the controls to determine whether the coating becomes thicker along the operating width. Lifting mecha-nisms 14 then adjust stops 13 relative to each other in accordance with the slope of the line until the slope is zero at the desired 'thickness (Fig. 3 c).
Although the flow-control mechanisms described herein are doctors, such other flow-control mechanisms as rollers or strip secured i:n a doctor beam could also be employed.
Claims (8)
1. Method of coating a web of material (2), guided around a backing roll (1), wherein an excess of coating material is applied to the web of material (2) over a working width, and then dosed to the desired coating weight by means of a dosing member (3), lying against the web of material (2), the dosing member (3) being fastened to a doctor beam (5) extending over the working width and bending of the doctor beam (5) being counteracted with the aid of a heating device fastened to the doctor beam (5), characterised in that deviation from a rectilinear pattern of the coating weight is determined transversely over the working width and, with the deviation as controlled variable, the heating power of a heating band (16), which is fastened continuously over the working width on a side (5.1, 5.2), facing away from the backing roll (1), of they doctor beam (5), is regulated.
2. Method according to claim 1, characterised in that in addition the slope of the regulated straight line of the coating weight distribution is determined and is regulated to a minimum value by one-sided adjustment of the dosing member (3) on one side.
3. The method of claim 1 or claim 2 applied to the coating of a web of paper or cardboard utilizing a dosing member (3) in the form of a doctor knife.
4. Apparatus for coating a web of material (2), guided around a backing roll (1), which apparatus is provided with a dosing member, having a foot that is fastened in a swivellable doctor beam (5), and with a heating device fastened on the doctor beam (5) and serving to counteract bending of the doctor beam (5), characterised in that at least one heating band (16) extending over the entire working width is fastened on a side (5.1, 5.2), facing away from the backing roll (1), of the doctor beam (5).
5. Apparatus according to claim 4, characterised in that the heating bands (16) are self-regulating.
6. Apparatus according to claim 5, characterised by a device for determining the coating weight distribution transversely over the working width and by a regulating device (15) which, with the magnitude of the deviation of the coating weight distribution from a straight line as controlled variable and the heating power of the heating bands (16) as correcting variable, regulates a rectilinear pattern of the coating weight distribution.
7. Apparatus according to claim 6, characterised in that adjusting members (14) for independently adjusting the distance between the dosing member (3) and the backing roll (1) are disposed an both sides of the apparatus, and in that the regulating device (15) additionally minimises the slope of the straight line of the coating weight distribution by one-sided adjustment of the dosing member (3).
8. Apparatus as claimed in any one of claims 4 to 7 for coating a web of paper or cardboard, wherein said dosing member is an elastic doctor knife.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3908386A DE3908386A1 (en) | 1989-03-15 | 1989-03-15 | METHOD AND DEVICE FOR COATING MATERIAL SHEETS, ESPECIALLY PAPER OR CARDBOARD SHEETS |
| DEP3908386.1 | 1989-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2007544A1 CA2007544A1 (en) | 1990-09-15 |
| CA2007544C true CA2007544C (en) | 2000-05-02 |
Family
ID=6376367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002007544A Expired - Fee Related CA2007544C (en) | 1989-03-15 | 1990-01-11 | Method and device for coating webs of material, especially webs of paper or cardboard |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5074243A (en) |
| EP (1) | EP0387412B1 (en) |
| JP (1) | JP2868573B2 (en) |
| AT (1) | ATE91922T1 (en) |
| CA (1) | CA2007544C (en) |
| DE (2) | DE3908386A1 (en) |
| ES (1) | ES2051974T3 (en) |
| FI (1) | FI106846B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI88755C (en) * | 1990-12-13 | 1993-06-28 | Valmet Paper Machinery Inc | Foerfarande och anordning Foer compensating av boejningnen hos en bladbalk |
| FI91025C (en) * | 1991-02-08 | 1995-08-22 | Valmet Paper Machinery Inc | Method for adjusting the cross-sectional profile of the amount of paper or other web material and a coating station for carrying out the method |
| FI90892C (en) * | 1991-09-13 | 1994-04-11 | Kaukas Oy | Procedure for checking blade beards in coating stations in a paper coating machine |
| DE9214884U1 (en) * | 1992-10-28 | 1994-03-03 | Zimmer, Johannes, Klagenfurt | Doctor device |
| US5480486A (en) * | 1993-12-21 | 1996-01-02 | Beloit Technologies, Inc. | Continuous adjustable backing bar for profiling coater blade |
| US5597415A (en) * | 1995-02-09 | 1997-01-28 | Voith Sulzer Paper Technology North America, Inc. | Profiling bar for a web coating device |
| DE19619250A1 (en) * | 1996-05-13 | 1997-11-20 | Voith Sulzer Papiermasch Gmbh | Device and method for the direct or indirect application of a liquid or pasty medium to a running material web, in particular made of paper or cardboard |
| DE19627456A1 (en) * | 1996-07-08 | 1998-01-15 | Voith Sulzer Papiermasch Gmbh | Coater for use in web products, especially paper or paper board |
| DE19631888A1 (en) * | 1996-08-07 | 1998-02-12 | Voith Sulzer Papiermasch Gmbh | Applicator for direct or indirect application of a liquid or pasty coating medium to a running material web, in particular made of paper or cardboard |
| DE19637164A1 (en) * | 1996-09-12 | 1998-03-19 | Voith Sulzer Papiermasch Gmbh | Method and device for the direct or indirect application of a liquid or pasty medium to a running material web |
| FI109215B (en) | 1996-10-28 | 2002-06-14 | Metso Paper Inc | Method and apparatus for coating paper or cardboard web |
| DE19649559A1 (en) | 1996-11-29 | 1998-06-04 | Voith Sulzer Papiermasch Gmbh | Device for the direct or indirect application of a liquid or pasty coating medium to a running material web |
| DE19801140A1 (en) | 1998-01-14 | 1999-07-15 | Voith Sulzer Papiertech Patent | Device for the direct or indirect application of a liquid to pasty application medium on a running material web and operating method for such a device |
| DE19821446A1 (en) * | 1998-05-13 | 1999-11-18 | Voith Sulzer Papiertech Patent | Assembly to apply a liquid or paste coating to the surfaces of a moving paper or cardboard web |
| DE19822505A1 (en) | 1998-05-19 | 1999-11-25 | Voith Sulzer Papiertech Patent | System to apply a liquid or paste coating to the surface of a moving web |
| DE19858653A1 (en) * | 1998-12-18 | 2000-06-21 | Voith Sulzer Papiertech Patent | Coating a moving web surface uses a controlled feed pump capacity to set the amount of medium delivered to the applicator to determine the mean coating weight with little or no surplus residue |
| DE60001212T2 (en) * | 1999-02-11 | 2003-09-04 | Alcan International Ltd., Montreal | METHOD AND DEVICE FOR CONTROLLING THE PROFILE FOR DIRECT COATING |
| DE102004037532A1 (en) * | 2004-08-03 | 2006-03-16 | Voith Paper Patent Gmbh | applicator |
| DE102009002017A1 (en) | 2009-03-31 | 2010-10-07 | Voith Patent Gmbh | Apparatus and method for coating webs, especially paper or board webs |
| DE102015121449A1 (en) * | 2015-12-09 | 2017-06-14 | Ba Assembly & Turnkey Systems Gmbh | Verstreicheinheit |
| DE102018009535A1 (en) | 2018-12-07 | 2020-06-10 | Andritz Küsters Gmbh | Commissioned work for the direct or indirect application of a coating medium |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1012582B (en) * | 1952-09-18 | 1957-07-25 | Heinrich Nicolaus G M B H | Process for the production of uniform coatings on carrier material webs and device for carrying out the process |
| US3134126A (en) * | 1961-10-17 | 1964-05-26 | Beloit Corp | Deflection compensation for doctor backs |
| US3221357A (en) * | 1962-11-01 | 1965-12-07 | Bird Machine Co | Non-sweating doctor blade support |
| US3785340A (en) * | 1972-08-08 | 1974-01-15 | Beloit Corp | Metering bar |
| DE2825907B2 (en) * | 1978-06-13 | 1981-02-26 | Jagenberg-Werke Ag, 4000 Duesseldorf | Device for applying a coating to a material web |
| DE2828339A1 (en) * | 1978-06-28 | 1980-01-17 | Schmidt Erwepa Maschf | METHOD FOR ADJUSTING AND MAINTAINING A PARTICULAR DEFLECTION OF THE SCRAPER BAR ON A SINGLE-SIDED WARMING SUSPENDED ON ITS LONG SIDE SIDE, ON A ROLLER, IN PARTICULAR A GLAETTING OR TROCERIFICATION PERSONALIZER |
| DE2932839A1 (en) * | 1979-08-14 | 1981-03-12 | Adolf Siebert Gmbh & Co, 5270 Gummersbach | Doctor blade support beam - has heaters to induce bending to compensate for doctor blade deflection |
| DE3639665C1 (en) * | 1986-11-20 | 1987-12-03 | Santrade Ltd | Device for producing thin sheets from flowable materials, in particular from synthetic resin |
| DE3729621A1 (en) * | 1987-09-04 | 1989-03-16 | Jagenberg Ag | DEVICE FOR COATING A MATERIAL RAIL THROUGH A COUNTER ROLLER |
| US4957770A (en) * | 1989-01-27 | 1990-09-18 | Measurex Corporation | Coating weight measuring and control apparatus and method |
-
1989
- 1989-03-15 DE DE3908386A patent/DE3908386A1/en not_active Withdrawn
- 1989-12-12 AT AT89122877T patent/ATE91922T1/en not_active IP Right Cessation
- 1989-12-12 ES ES89122877T patent/ES2051974T3/en not_active Expired - Lifetime
- 1989-12-12 DE DE8989122877T patent/DE58905057D1/en not_active Expired - Fee Related
- 1989-12-12 EP EP89122877A patent/EP0387412B1/en not_active Expired - Lifetime
-
1990
- 1990-01-11 CA CA002007544A patent/CA2007544C/en not_active Expired - Fee Related
- 1990-02-23 US US07/484,021 patent/US5074243A/en not_active Expired - Lifetime
- 1990-03-14 JP JP2061311A patent/JP2868573B2/en not_active Expired - Fee Related
- 1990-03-14 FI FI901284A patent/FI106846B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE58905057D1 (en) | 1993-09-02 |
| EP0387412A3 (en) | 1991-01-30 |
| ATE91922T1 (en) | 1993-08-15 |
| ES2051974T3 (en) | 1994-07-01 |
| JP2868573B2 (en) | 1999-03-10 |
| JPH0330866A (en) | 1991-02-08 |
| FI901284A0 (en) | 1990-03-14 |
| DE3908386A1 (en) | 1990-09-27 |
| EP0387412A2 (en) | 1990-09-19 |
| FI106846B (en) | 2001-04-30 |
| EP0387412B1 (en) | 1993-07-28 |
| US5074243A (en) | 1991-12-24 |
| CA2007544A1 (en) | 1990-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |